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Not AvailableKair (Capparis decidua) is one of the multipurpose shrubs of hot arid ecosystem and found in diverse habitats unattended and unprotected. In recent past, due to changes in land use pattern, mechanization, expansion of irrigation facilities, urbanization etc. natural habitats of kair are under serious threat. For achieving sustainable development, based on use of available genetic wealth, promotion and conservation of adapted arid species like kair is of immense importance. Extensive survey of western Rajasthan was carried out to collect germplasm from different habitats during April-May 2011 and 45 accessions were collected from different sites. Marked diversity with respect to plant types, canopy, flowering and fruiting were observed in natural population. The seeds of collected germplasms were further sown in nursery for seedling study and field planting for ex-situ conservation. Among the accessions, germination ranged from 41.6-93.4% and survival ranged from 44.2 to 76.8% in nursery. After one year of field planting accessions, CZJK-8 followed by CZJK-9, CZJK-4, CZJK-15 and CZJK-21 showed better survival (>80%), however, accessions CZJK-14, CZJK-33, CZJK-34 and CZJK-35 showed poor survival (<25%). The available germplasm is being further evaluated for characterization and utilization in breeding programme for selection of elite plant types.Not Availabl

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Not AvailableForty one genotypes of seed purpose watermelon were evaluated under rainfed conditions of Jaisalmer for their seed yield stability during kharif 2011-2013. Among the genotypes variability was fairly conspicuous for seed size, shape, color and seed distribution pattern inside the fruit flesh. Number of fruits, fruit yield and seed yield per plant exhibited high heritability coupled with high genetic advance as per cent of mean. The analysis of variance showed significant differences among the genotypes and environments for seed yield and other contributory traits. Four genotypes viz., SKNK-683, SKNK-112, SKGPK-26 and SKGPK-30 remained stable over seasons, meanwhile genotypes viz., DRB-675, DRB-677, SKNK-665, SKNK-679, SKNK-903, SKGPK-22, SKGPK-24, SKGPK-31 and SPS-8 performed better in good rainfall year. These genotypes can be used in further breeding programs for development of high seed yield genotypes of watermelon for different situations of hot arid zone.Not Availabl

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Not AvailableDry and pure seeds of two clusterbean cultivars (RGC 936 and HGS 365) were treated with gamma rays (10, 20, 30 and 40 kR) and EMS (0.1, 0.2, 0.3 and 0.4 per cent). Gradual reduction in germination and subsequent survival of the treated population were observed with the increased mutagen dose in both cultivars. Four different types of morphological mutants were observed with the maximum mutation frequency of spreading types in case of higher doses of gamma rays. Positive association was observed between mutagen dose and mutation frequency of morphological traits in M2 generation. Three different types of chlorophyll mutant viz. chlorina, xantha and albina were observed: chlorophyll mutants induced with gamma rays had higher frequency than EMS induced mutants. Fifty best performing progenies, identified in M3 on the basis of earliness and higher seed yield, were further tested and fifteen of them were selected in M4 generatioNot Availabl

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Not AvailableCoriander (Coriandrum sativum L.) is one of the important seed spice crops of India (Purthi, 1976) with large domestic consumption and a bright export potential. Rajasthan state has 1,37,670 ha area under the crop, with the production of 1,44,951 t (Anonymous, 1995-96), thus constituting 40-50% of the total area, as well as production of the country. The dry climate , of the state, particularly during crop maturity, promotes the quality of produce. However, the crop suffers from low productivity (5-6 q ha·l) on account of the lack of high yielding varieties, high incidence of diseases and pests, and poor adoption of improved package of practices (Sharma, 1994). Studies on the germplasm collection revealed that a genetic variability in respect of yield and yield attributes is limited, restricting the progress of crop improvement. Controlled hybridization to exploit limited variability is difficult due to small flower size.Not Availabl

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Pub. CAZRI, Jodhpur, 40p.Not AvailableNot Availabl

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Not AvailableDNA was isolated from leaves of 10 plant species (cuminum cyminum, vigna aconitifolia, pennisetum typhoides, Tecoma stans, Lycium barbarum, Anogeissus acuminate, Tecomella undulata, zizphus mauritiana, Phoenix dactylifera, and Erucasativa ) and a fungus (Fusarium oxysporum ) using the CTAB method. Three fixing solutions (alcohol, alcohol and chloroform , alcohol and EDTA ) were used to produce high molecular weight dna (>40 kb). DNA quality was comparable for the 3 fixing solution offered no advantage over absolute alcohol. Isolated DNA was suitable for RAPD analysis, restriction digestion , abd cloning. This method does not require liquid nitrogen for fixation , grinfing, or storage at- 80 c, making it advantageous over other common protocols.Not Availabl

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Not AvailableGenetic variation and correlation analyses for plant height, length of main branch, number of branches per plant, number of siliquae on main branch, number of seeds per siliqua, yield per plant, test weight, oil content, number of days to flowering and number of days to maturity were conducted using 55 Indian mustard genotypes grown in Bikaner, Rajasthan, India. The variation among the genotypes was significant for all the traits except number of seeds per pod. The phenotypic coefficient of variation was slightly higher than the genetic coefficient of variation. High heritability coupled with high genetic advance was recorded for yield per plant, test weight, number of siliquae on main branch and number of branches per plant, indicating that the heritability of these traits is attributed to additive gene effects. High heritability along with medium to low genetic advance was recorded for plant height, length of main branch and number of days to flowering, indicating the presence of non-additive gene actions. The genotypic correlation was greater than the phenotypic correlation. Yield per plant was positively associated with number of branches per plant, number of siliquae on main branch, plant height, number of seeds per siliqua and length of main branch. Oil content was negatively correlated with test weight. A positive association among plant height, length of main branch, number of branches per plant, number of siliquae on main branch, number of seeds per siliqua and yield per plant was observed. Path analysis revealed that the number of branches per plant had the greatest direct and indirect effects on grain yield.Not Availabl

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Pub. CAZRI, Jodhpur, 40p.Not AvailableNot Availabl

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Not AvailableWind erosion is the most noticeable land degradation process in the hot arid region of India that covers about 16% of the geographical area of India. It results into loss of considerable amount of nutrient-rich particles from the region. Field investigations were carried out in a rangeland site located at Jaisalmer centre of Central Arid Zone Research Institute in the province of western Rajasthan to quantify the nutrient loss through wind erosion. The aeolian mass fluxes (M L-2 T-1) were collected at four different heights: 0.25 m, 0.50 m, 0.75 m, and 2 m above land surface. Analysis of eroded soil was performed using Foss Heraeus CHN-O-rapid elemental analyzer. The results have revealed an average loss of 4 g C kg-1 and 0.37 g N kg-1. Present study shows that the C and N content in eroded soils were highest during the month of July and the accumulated annual loss was approximated as 45.9 kg C ha-1 and 4.3 kg N ha-1. To mitigate such appreciable soil nutrient losses through wind erosion, suitable rangeland utilization practices, which can help to retain the soil health and would also support the crop/grassland productivity in arid ecosystem, need to be evolved on priority.Not Availabl